The launch trailer encompasses events across the entire trilogy, showing off both the authentic voices pulled straight from the movies and the healthy touch of humor that is a staple of LEGO games.

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LEGO Lord of the Rings is available today in North America, and according to Game Informer there has been a mix-up with some of the game discs people are receiving.

Some copies of the Xbox 360 version contain a disc clearly marked "Demo disc not for sale" rather than the actual game. It appears that the mix-up is only affecting certain shipments of the game rather than widespread across all Xbox 360 copies.

Players will be able to drop into key levels from a map of Middle-earth, allowing them to return to previous areas and complete side objectives. A new backpack system will allow players to store special items found during the adventure, granting characters new abilities that they may not otherwise possess.

For the first time in the LEGO series, LEGO Lord of the Rings will feature actual dialogue taken from the films and performed by the original actors.

Traveller's Tales' last game, LEGO Batman 2: DC Super Heroes, also featured voiced dialogue, but this will be the first LEGO game using original voices from the source material.

LEGO Lord of the Rings is available now in North America and will launch from November 23 in Europe.

The game is being developed for Xbox 360, PS3, Wii, Nintendo DS, 3DS, PS Vita and PC.